Dress Code Question
My wife and I are taking the trip down the Rhine leaving from Amsterdam on July 18th. There are two formal occasions on the trip in which it is suggested that men wear a coat and tie. Packing a coat takes up a fair amount of space...so two questions:
1) Anyone have an idea as to approximately what % of the men will wear a coat and tie on the more formal occasions?
2) Would one be out of place if they wore slacks and a sweater?
Thank you in advance for any responses.
Greg Carlsted